HairStrandsCore/Public/GroomAssetInterpolation.h
[USTRUCT](Programming/UnrealArchitecture/Reference/Structs)([BlueprintType](Programming/UnrealArchitecture/Reference/Structs/Specifiers/BlueprintType)) struct FHairDecimationSettings
float
CurveDecimation
Reduce the number of hair strands in a uniform manner (initial decimation)
float
VertexDecimation
Reduce the number of vertices for each hair strands in a uniform manner (initial decimation)